Furnace-grate.



J. C. QUINN.

FURNACE GRATE.

APPLICATION FILED IAN-3111912.

1,199,926. Patented 0%. 3,1916.

WITNESSES; l/Vl/E/VTOH fl-"w By v Arm/My 'U TE JOHN C. QUINNQOF NEW YORK, N. Y.

FURNACE-GRATE.

Specification of Letters Patent.

Patented oeas, 1916.

Application filed. January 31, 1912. Serial No. 574,439.

To all whom it may concern:

Be it known that I, JOHN C. QUINN, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in F urnace-Grates, of which the following is a full, true, and complete specification.

This invention relates to furnaces, and more particularly to furnace grates; and its object is to provide improved supporting means including a novel self-contained frame structure composed of members joined in a manner to secure a high degree of strength and stability.

The accompanying drawings illustrate the invention by means of the preferred embodiments thereof.

7 In the drawings: Figure 1 is afragmentary plan on an enlarged scale of one corner preferably constituting a dumping structure composed of rocln'ng grate bars 10, and a marginal part or border 11, the surfaces of these two parts lying in the same plane and continuous with each other, and together constituting the grate surface. The border 11 is preferably fixed, constituting a flange structure projecting inward from the tops of members 12, 12 forming the supporting frame. Both parts of the grate are provided with draft openings therethrough. The openings in the grate bar are designated 13 and those in the border 14. The openings 13 are preferably elongated or slot-like, being arranged in longitudinal rows, the members of the rows being in staggered relation for greater strength. The openings ll are also elongated and are disposed transversely of the border. They are entirely surrounded by the metal of the border flanges, and are spaced somewhat away from the furnace walls.

The end members 12 of theframe are suitably supported in the furnace chamber, and the side members 12 are supported on the end members. The frame members are firmly joined or mortised at the corners. Preferably the, outer sides of the frame members or bars which are'placed in juxtaposition to the furnace walls are plane. As shown more particularly in Figs. 1, 2 and 3, the border 11 is cut away at the ends of the frame members 12, so as to afford rectangular recesses into which fit the ends of the borders of the frame members 12. The projecting portion of the body or vertical part of the members 12 constitutes a wall opposite the end of the. member 12. The members 12 are further provided, on their lower portions, with internal, laterally projecting ledges or projections 21, affording upward-facing shoulders, on which the ends of the members 12rest and are supported, the said members 12 being preferably notched at their lower corners as shown at 22, to receive and rest on the ledges 21. The members so joined may be united by means of angle pieces 24 and bolts or rivets 25.

What is claimed as new is:

A grate frame, comprising rectangularly arranged bars comprising vertical web portions-and inwardly projectingtop flanges provided with draft openings, the corner joints of the frame being characterized by one of the bars having its flange cut away at the end to receive the flange of the other bar, the web of the first-mentioned bar being intact opposite the end of the second 1 bar, and said first-mentioned bar having an inward projecting ledge on which the web of said second bar rests.

- In testimony whereof, I have signed this specification in the presence of two witnesses.

JOHN G. QUINN.

Witnesses:

OSCAR W. JEFFERY, G. A. TAYLOR,

Copies of this patent may he obtained for five cents each, by addressing the (lommissioner of Patents.

Washington, D. G. 

